C# 用C语言更新NHibernate 3.3中的儿童

我一直在寻找如何更新父实体的子实体，但找不到符合我要求的内容。我正在使用数据网格视图控件将这些子数据绑定到表单和数据集。我需要能够知道数据网格中的哪些行被修改、删除和添加，这就是我需要将其传递给数据集的原因

下面是我的父映射和子映射：

父项：Fees.hbm.xml 子项：FeesLines.hbm.xml

---

我需要能够使用NHibernate更新我的孩子记录，那么您是如何做到的？

我找到了一种方法来更新我的孩子记录，下面是我如何做到的：

public bool UpdateFees(string id, string code, string desc, DataSet details)
    {
        bool success = false;

        using (ITransaction transaction = Session.BeginTransaction())
        {
            try
            {
                Fees fees = (Fees)Session.Get("EnrollmentSystem.Domain.Fees", Guid.Parse(id));
                fees.Code = code;
                fees.Description = desc;

                if (details.HasChanges())
                {
                    if (details.HasChanges(DataRowState.Added))
                    {
                        DataSet tempDataSet = details.GetChanges(DataRowState.Added);
                        foreach (DataRow row in tempDataSet.Tables[0].Rows)
                        {
                            FeesLines lines = new FeesLines();
                            lines.Fee = fees;
                            lines.Id = Guid.NewGuid();
                            lines.Description = row["Description"].ToString();
                            lines.Amount = (row["Amount"].ToString() == "") ? 0 : Convert.ToDecimal(row["Amount"].ToString());
                            fees.FeesDetails.Add(lines);
                            Session.Save(lines);
                        }
                    }

                    if (details.HasChanges(DataRowState.Modified))
                    {
                        DataSet editedSet = details.GetChanges(DataRowState.Modified);
                        foreach (DataRow row in editedSet.Tables[0].Rows)
                        {
                            var item = (from f in fees.FeesDetails
                                        where f.Id.Equals(Guid.Parse(row["Id"].ToString()))
                                        select f).SingleOrDefault();
                            if (item != null)
                            {
                                item.Description = row["Description"].ToString();
                                item.Amount = Convert.ToDecimal(row["Amount"].ToString());
                                Session.SaveOrUpdate(item);
                            }
                        }
                    }

                    if (details.HasChanges(DataRowState.Deleted))
                    {
                        DataSet deleted = details.GetChanges(DataRowState.Deleted);

                        for (int row = 0; row < deleted.Tables[0].Rows.Count; row++ )
                        {
                            var item = (from f in fees.FeesDetails
                                        where f.Id.Equals(Guid.Parse(deleted.Tables[0].Rows[row][0, DataRowVersion.Original].ToString()))
                                        select f).SingleOrDefault();
                            if (item != null)
                            {
                                fees.FeesDetails.Remove(item);
                            }
                        }
                    }
                }

                Session.SaveOrUpdate(fees);

                transaction.Commit();
                success = transaction.WasCommitted;
            }
            catch (Exception ex)
            {
                transaction.Rollback();
                throw;
            }
        }

        return success;
    }

---

我创建了一个函数，在该函数中，我传递了父数据的新值，并传递了包含新的/修改的/删除的子数据集。

：如果您有一个问题，您已经知道答案，并且希望公开记录该知识，以便包括您自己在内的其他人稍后可以找到它，完全可以问和回答你自己的问题…-但你不应该把这些都塞进问题箱。试着把你的问题重新写成一个问题，然后把你的答案加上去。哦，对不起，好的。可以！

<class name="FeesLines" table="fees_lines">
<id name="Id" column="id">
  <generator class="guid" />
</id>
<property name="FeesId" column="fees_id" type="System.Guid" insert="false" update="false" />
<property name="Description" column="description" />
<property name="Amount" column="amount" />

<many-to-one name="Fee" class="Fees" column="fees_id" />

public bool UpdateFees(string id, string code, string desc, DataSet details)
    {
        bool success = false;

        using (ITransaction transaction = Session.BeginTransaction())
        {
            try
            {
                Fees fees = (Fees)Session.Get("EnrollmentSystem.Domain.Fees", Guid.Parse(id));
                fees.Code = code;
                fees.Description = desc;

                if (details.HasChanges())
                {
                    if (details.HasChanges(DataRowState.Added))
                    {
                        DataSet tempDataSet = details.GetChanges(DataRowState.Added);
                        foreach (DataRow row in tempDataSet.Tables[0].Rows)
                        {
                            FeesLines lines = new FeesLines();
                            lines.Fee = fees;
                            lines.Id = Guid.NewGuid();
                            lines.Description = row["Description"].ToString();
                            lines.Amount = (row["Amount"].ToString() == "") ? 0 : Convert.ToDecimal(row["Amount"].ToString());
                            fees.FeesDetails.Add(lines);
                            Session.Save(lines);
                        }
                    }

                    if (details.HasChanges(DataRowState.Modified))
                    {
                        DataSet editedSet = details.GetChanges(DataRowState.Modified);
                        foreach (DataRow row in editedSet.Tables[0].Rows)
                        {
                            var item = (from f in fees.FeesDetails
                                        where f.Id.Equals(Guid.Parse(row["Id"].ToString()))
                                        select f).SingleOrDefault();
                            if (item != null)
                            {
                                item.Description = row["Description"].ToString();
                                item.Amount = Convert.ToDecimal(row["Amount"].ToString());
                                Session.SaveOrUpdate(item);
                            }
                        }
                    }

                    if (details.HasChanges(DataRowState.Deleted))
                    {
                        DataSet deleted = details.GetChanges(DataRowState.Deleted);

                        for (int row = 0; row < deleted.Tables[0].Rows.Count; row++ )
                        {
                            var item = (from f in fees.FeesDetails
                                        where f.Id.Equals(Guid.Parse(deleted.Tables[0].Rows[row][0, DataRowVersion.Original].ToString()))
                                        select f).SingleOrDefault();
                            if (item != null)
                            {
                                fees.FeesDetails.Remove(item);
                            }
                        }
                    }
                }

                Session.SaveOrUpdate(fees);

                transaction.Commit();
                success = transaction.WasCommitted;
            }
            catch (Exception ex)
            {
                transaction.Rollback();
                throw;
            }
        }

        return success;
    }